Linker command failed

Sulagna Mukherjee

• 2019年04月25日 23:09

Compiling the mip1_c++ (saved as mip1.cpp here) example given in the Library using this:

g++ mip1.cpp -L /Library/gurobi811/mac64/lib/ -I /Library/gurobi811/mac64/include/ -lgurobi_c++ -lgurobi81 -m64

gives me the following error:

Undefined symbols for architecture x86_64:
"GRBEnv::GRBEnv()", referenced from:
_main in mip1-11be9d.o
ld: symbol(s) not found for architecture x86_64
clang: error: linker command failed with exit code 1 (use -v to see invocation)

Working in a 10.14 os x mojave

Any help?

1

• 正式なコメント

  

  Simranjit Kaur

  Gurobi Staff

  • 2024年12月06日 00:59

  This post is more than three years old. Some information may not be up to date. For current information, please check the Gurobi Documentation or Knowledge Base. If you need more help, please create a new post in the community forum. Or why not try our AI Gurobot?.
• 

  Daniel Espinoza

  • 2019年04月26日 20:39

  Hi Sulagna,

   

  most probably you are using a different C++ version. Gurobi ships with two static libraries, located in gurobi811/mac64/lib/libgurobi_g++4.2.a and gurobi811/mac64/lib/libgurobi_stdc++.a , you just need to change the symbolic link for gurobi811/mac64/lib/libgurobi_c++.a and try again.

  If this fails, you can build a static library compatible with your particular compiler. The sources are provided in gurobi811/mac64/src/cpp/

   

  Best,

  Daniel

  0
• 

  Greg Glockner

  Gurobi Staff

  • 2019年04月29日 17:27

  Also, please try the sample Makefile in the examples/build directory.

  0
• 

  Luis Moncayo

  • 2022年05月26日 18:49

  

  

  

  Dear Greg,

  I've got the same problem and I'm totally new

  could you please please help with more specific. I will appreciate it.

  Regards

  0

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